diff --git a/crates/energy/src/graph.rs b/crates/energy/src/graph.rs
index d3ca7f54..acce9f2a 100644
--- a/crates/energy/src/graph.rs
+++ b/crates/energy/src/graph.rs
@@ -27,7 +27,7 @@ impl Plugin for GraphPlugin {
             .add_systems(OnExit(GameState::Playing), clean_up)
             .add_systems(PostUpdate, spawn_graph_components)
             .add_systems(
-                PreUpdate,
+                FixedUpdate,
                 (
                     remove_old_nodes.before(GraphSystemSet::UpdateNearby),
                     update_nearby_recv.in_set(GraphSystemSet::UpdateNearby),
diff --git a/src/main.rs b/src/main.rs
index a4a49204..ff751d1a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -34,6 +34,7 @@ use tracing::{span, Level};
 
 const CARGO_PKG_VERSION: &str = env!("CARGO_PKG_VERSION");
 const GIT_SHA: &str = env!("GIT_SHA");
+const FIXED_TIMESTEP: f32 = 1. / 10.; // 10 ticks per second
 
 fn main() {
     let mut app = App::new();
@@ -50,6 +51,7 @@ fn main() {
         let _enter = span.enter();
 
         app.insert_resource(Msaa::Sample4)
+            .insert_resource(FixedTime::new_from_secs(FIXED_TIMESTEP))
             .add_plugins(
                 DefaultPlugins
                     .set(WindowPlugin {